Photos

An artist rendering shows the unusual native ungulates of South America Toxodon platensis which were more closely related to perissodactyls (horses and their allies) than to other living placental mammals in this handout illustration released on March 17, 2015. Rhino-sized Toxodon is estimated to have weighed about 1,500 kilograms (3,300 pounds). REUTERS/Peter Schouten/Handout (UNITED STATES - Tags: ANIMALS ENVIRONMENT) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS